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UK clocks change dates
When the clocks next go forward (BST starts) or back (BST ends).
—days until clocks go forward
—days until clocks go back
How it works
UK clocks go forward one hour on the last Sunday of March (British Summer Time starts) and back one hour on the last Sunday of October (BST ends), both at 1am. The last Sunday of a month is found by starting at the month's last day and walking backward until landing on a Sunday.
FAQ
- What time do the clocks actually change?
- At 1am UK time — clocks go forward to 2am in spring, and back to midnight (12am) in autumn, both on the last Sunday of their respective month.
- Why the last Sunday, not a fixed date?
- UK clock changes are defined relative to the calendar (last Sunday of March and October), not a fixed day number, so the exact date shifts by a few days from year to year.
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